Cutting-tool holder



`A. CL NIELSEN.

CUTTING To'oL HOLDER. APPLICATON FILED'JUNE l0. 1920.

Patented Mar. 15, 1921.

UNITED STATES PATENTOFFICE.

ANDREW' NIELSEN, OF CLEVELAND. OHIO.

CUTTING-TOOL HOLDER.

Application led .Tune 10, 19S

To all whom t may concern.' Y

Re it known that l, ANnnnw C. Ninnsnn', citizen of the United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented certain new and useful Improvements in Cutting-Tool Holders, otwhich the following is a specification.

This invention relates to cutting tool holders, particularly slottingandl key seating tools for Shapers, and has for its object to provide atool holder having a wide range i of adjustment for adapting it tovarious sizes and makes of machines; alsov a holder adaptable to takecare oit different kinds and sizes ot tools, and means for quickly andaccurately attaching and dota-ching the tools in the socket provided inthe holder. In order toA properly accomplish this result particularattention has been givento providing a Wide range ot adjustment on thetool relative to therelation ofthe tool holding socket and the tool andthe clamping members tor holdwhen working in deep holes with ,a longvtool; also in order to produce a tool simple in construction and strongfor meeting the thrust ot a heavy cut, the frame like body has beenfound to meet all the requirements and will be described more fully indetail hereinafter.

In the accompanying drawings Figure 1 is a front elevation of theholder. Fig. 2 is a side elevation. Fig. 3 is a front elevation,

enlarged, i". the tool holder body, and Fig. L1 is a side elevation ofthe same and the swivel head. Y

Referring speciically to the drawings, 5 indicates a ram or slide of theshaping machine which is recipiocated in the usual manner, and hassecured toits front end the usual adjusting head 6 carrying the swivelclapper box '7 in which is pivoted at 7 b the apron or clapper 7 whichswings to make Vthe cutting point of the tool clear the work on the backSpecification of Letters Patent.

atonted Mar. 15, 1921.

j Serial No. 387.833.

stroke of the tool. rl`his carries a stud 8 by which the tool holderproper is attached to the apron.

ihe tool holder 1's indicated at 9 and coinprises .an elongated bodyslotted lengthwise as indicated at 10 and provided at its lower end witha clamp 11 toi' holding the har 13 ot the cutter 14. The two sides ofthe clamp are divided by a slit 10LAL which forms continuation of theslot 10. and the cutter bar is clamped by two screws 12 extending acrossslit, the sides of the body having sut ncient spring to permit them tobe drawn up by the screws against the cutter bar and having a tendencyto spring back `to its loriginal position when the screws are backed upagain thus Jfreeing automatically the cutter bar so that it may easilybe removed and replaced by hand. The clamp socket for receiving thecutter bar may beAinade of a certain size, and for smaller bars alining` or bushing can be used in thc socket. A bearing washer 8a isengaged under the head oi'l the stud S and held by pins 17 bears againstthe body at opposite sides o1 the slot 10. 15 is an adjusting screw forregulating the movement of the clapper, and this screw is tapped througha shouldered block 15'U1 which tits in the slot 10 where it may beadjusted and clamped in any desired position by a clamping nut 16a on athreaded extension ot said block. The clapper movement regulating screw15 is fixed at adjustment by the lock nut 16 provided thereon. Thedrawing shows the clapper iiXed against movement, but by backing out thescrew 15 it can be allowed to swing to any extent desired.

By the means described the holder 9 may be adj ustedL angularly orvertically, and fixed at adjustment by the stud 8, and the screw 15 isalso capable of adjustment both in respect to position in slot 10 aswell as in respect to controlling the clapper movement of the tool whichmay on some work be allowed to be considerable whiley on other classesof work it may be desirable to arrest the movement entirely, which can,as set forth, be properly taken care of. The holder 9 comprises acontinuous piece of great strength and rigidity in the line of thecutting thrust, and as the slot extends nearly the whole length of theholder a wide ran e of adjustinnt is possible. As stated, tige body hassulicient spring to allow the cutter bar to be readiy inserted in orremoved from CIK the clump socket when the screws l2 ure released, undto firmly clamp the bur when the screws :1re tightened.

The device will be found very useful for holding e variety of tools inslotting or shaping operations, with a shaping machine Aof the kindreferred to.

I cla-iin:MV

l. A cutting tool holder comprising u slotted body having u socket for acutter bei' at one end of. the siot, und u clamping screw connecting;`opposit Sides o1e the body, zicroes the slot und adapted to Spring theSaune toward euch other to clamp the cutter bar in the socket, the sidesof the body being` spaced up-Luit at the upper end of the slot, topermit u. belt'to be inserted between Suid sides.

2. A. cutting' tool holder coinprieing u body ineinber hir-ving a,longitudinal Slot terminating in u. socket ut one endthereoiperpendieulur te the long-,r axis of the slot, und e clamping; screwconnecting opposite Sides of c the body, across Suid Slot und :adaptedto Spring' 'the sides toward euch other, to clump u cutter bur in theSocket the Sides of the body being' spaced apart the upper end of theslot, to permit e. boit to be inserted between Suid sides.

The ceinbinzrtion with :i Shaper apron und its stud, of u tool-holderhaving uy slot `through which Said stud extends, and e clamp for t tool`shank, et the lower end of said slot, Suid slot permitting' the sides ofthe holder to be sprung 'toward each other.

ll. The combination with a. Shaper apron und stud, of u. cutter bei'holder having 2L slet through which said stud extends, an ad justublechipper contreliing device extend-V 6. The combination with u Aslottedtool` holder, und pirated apron er ciapper to wi'iich it is iied, of eblock adjustable in the slet, ineens te heid the'blo'elr at adjustinent,u, screw tapped through the block, end :a lock nut on the screw,engaging the vblock vtov hold the serewut adjustment.

T. The )combination with slotted tool helder und e pi'voted apron ordapper block to which it 1s fix-ed, oif e Screw, a flanged block throughwhich said screw is threaded', e

check nut on seid screw for locking it at 21djuist-nient and a, nut Vontheienged 'clock for clamping the bloei: ,at enydesired lposition in theslot' in the tool holder. Y

ln testimony whereoie I do affix mysignature in presence of twowitnesses.

ANDREW C. NIELSEN. Witnesses:

Y Y JOHN A BOMMHARDT,

G." ROSENBERG.

